RX4901CE XS A0B

Real Time Clock Overview

The RX4901CE XS A0B is a Real Time Clock (RTC) manufactured by Epson Timing. It features a 3-wire or 4-wire SPI bus interface and operates within a temperature range of -40°C to +85°C. The component provides high stability with an accuracy of ±3.0 x 10^-6 ppm in the extended temperature range, corresponding to a monthly rate of ±8 seconds. It utilizes a surface-mount package measuring 3.2 mm x 2.5 mm with a maximum thickness of 1.0 mm.

Real Time Clock Feature Summary

• High stability accuracy of ±3.0 x 10^-6 ppm (-40°C to +85°C)
• Supports 3-wire and 4-wire SPI bus interfaces
• Compact SMD package dimensions: 3.2 mm x 2.5 mm x 1.0 mm max

Real Time Clock Applications

• Industrial equipment requiring precise timekeeping
• Automotive electronics systems
• Consumer devices needing stable clock sources

Real Time Clock Part Context

This component belongs to the RX4901CE series of real-time clocks from Epson Timing. The 'XS' designation indicates the specific stability grade of ±3.0 x 10^-6 ppm over the industrial temperature range. The suffix 'A0B' identifies the specific ordering variant for this part number.

Real Time Clock Replacement Considerations

Direct replacements must match the RX4901CE series specifications, including the 3.2x2.5mm package and SPI interface compatibility. Verify that substitute components support the required ±3.0 x 10^-6 ppm stability across the -40°C to +85°C operating range.